Portable audio speaker



FIG. 1 is a front perspective view of a portable audio speaker showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a right side view thereof.

The broken lines in the Figures illustrate the portions of the portable audio speaker and form no part of the claimed design. Further, the broken lines along the periphery of the closure in FIGS. 1, 2, 5-8 are included to show the unclaimed seam on the article. 

CLAIM The ornamental design for a portable audio speaker, as shown and described. 